DC-DC Power Converters Part I Pavol Bauer Learning Objectives - - PowerPoint PPT Presentation

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DC-DC Power Converters Part I Pavol Bauer Learning Objectives - - PowerPoint PPT Presentation

Oct 21, 2023 330 likes •492 views

DC-DC Power Converters Part I Pavol Bauer Learning Objectives What is the duty cycle? What is the ratio between the input voltage and output voltage of DC DC buck converter? What are the operating states of buck converters?

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SLIDE 1

DC-DC Power Converters – Part I

Pavol Bauer

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SLIDE 2

Learning Objectives

  • What is the duty cycle?
  • What is the ratio between the input voltage and
  • utput voltage of DC DC buck converter?
  • What are the operating states of buck

converters?

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SLIDE 3

Power Electronic Switch

Source: https://www.vfds.com/blog/switching-it-up-igbt

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SLIDE 4

DC DC Conversion

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SLIDE 5

Buck Converter

Ton = the on- time of the switch T = total period

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SLIDE 6

Buck Converter

Ton = the on- time of the transistor T = total period

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SLIDE 7

Behaviour of a Capacitor

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SLIDE 8

Behaviour of an Inductor

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SLIDE 9

Methods of Chopper

Pulse width modulation (PWM), Ton is varied. Variable frequency control (frequency modulation), T is varied.

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SLIDE 10

Duty Cycle (D)

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SLIDE 11

Step Down (Buck)

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SLIDE 12

Buck Converter

1 2

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SLIDE 13

State 2 State 1

Buck converter

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SLIDE 14

Buck Converter

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SLIDE 15

Summary